CN205309503U - Reflow furnace's nitrogen gas supply system - Google Patents
Reflow furnace's nitrogen gas supply system Download PDFInfo
- Publication number
- CN205309503U CN205309503U CN201620023922.9U CN201620023922U CN205309503U CN 205309503 U CN205309503 U CN 205309503U CN 201620023922 U CN201620023922 U CN 201620023922U CN 205309503 U CN205309503 U CN 205309503U
- Authority
- CN
- China
- Prior art keywords
- supply
- valve
- branch road
- warm area
- supply branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a reflow furnace's nitrogen gas supply system, including nitrogen gas air supply and three air feed branch roads, reflow furnace includes furnace body and furnace body down, the anterior air feed of first air feed zhi luxiang reflow furnace weld zone, second air feed zhiluxiang reflow furnace heating area's front end air feed, all the other part air feed of third air feed zhiluxiang reflow furnace. The utility model discloses according to welding process's demand, adopt three air feed branch roads to supply with nitrogen gas to reflow furnace's different positions respectively, simple structure, manual control or automatic control are relatively more convenient.
Description
[technical field]
This utility model relates to reflow soldering, particularly relates to the nitrogen feed system of a kind of reflow soldering.
[background technology]
The microminiaturization of the components and parts on circuit board and the multifunction of product, drive densification and the three-dimensional of circuit board mounting design. it is characterized in that solder joint is more and more intensive, welding spot size is more and more small, spacing is more and more thinner. weld defect is the principal element affecting Quality of electronic products, in order to ensure the quality of surface adhered with electronic product, the process characteristic of the core link Reflow Soldering of surface mount process has been analyzed, and according to the temperature of Reflow Soldering and process characteristic the tin sweat(ing) to occurring in Reflow Soldering welding process, bridge is even, wicking, cavity, Manhattan phenomenon, the several frequently seen weld defects such as PC reflow soldering oxygen concentration monitoring system distortion, in order to effectively reduce the occurrence rate of weld defect, improve the welding quality of Reflow Soldering, what adopt in the same industry at present is that the mode adjustment valve manual adjustments nitrogen directly to burner hearth supplying nitrogen is constant, substantial amounts of to stove the supply of nitrogen constantly, ensure the anti-oxidation of quality of welding spot.
The patent No. a kind of reflow soldering apparatus that has been the disclosure of the invention of CN102717163A, this reflow soldering apparatus by supply in stove by after using in cooling, the medium of result heating, it is possible to reduce power consumption, and, it is possible to set desired temperature curve. Reflow soldering is configured with multiple body of heater continuously along the transport path of heating object, and it is covered by adiabator at least partially. Go to constitute preheating part, Reflow Soldering portion, cooling end successively from the entrance side of transport path towards outlet side. The medium, the such as nitrogen that are employed in cooling is supplied to the body of heater being included in Reflow Soldering portion. It is provided with pipe arrangement, by feeding medium in pipe arrangement, cooling down this region in the region of the preheating part adjacent with Reflow Soldering portion. Each heating warm area of the reflow soldering apparatus of this invention has a branch road for nitrogen, and a Valve controlling all used by each branch road, and structure is complicated, controls difficulty big.
[summary of the invention]
The technical problems to be solved in the utility model is to provide a kind of simple in construction, it is simple to the nitrogen feed system of the reflow soldering of control.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is, a kind of nitrogen feed system of reflow soldering, including Nitrogen source gases and three supply branch roads, reflow soldering includes upper furnace body and lower furnace body, the anterior supply of the first supply Zhi Luxiang reflow soldering weld zone, the front end supply of the second supply Zhi Luxiang reflow soldering heating zone, the remainder supply of the 3rd supply Zhi Luxiang reflow soldering.
Above-described nitrogen feed system, reflow soldering includes 10 heating warm areas and two cooling warm areas, the contiguous first cooling warm area of the tenth heating warm area; First supply branch road supplies to the 8th heating warm area and the 9th heating temperature of upper furnace body, second supply branch road is to the first heating warm area supply of upper furnace body, and the 3rd supply branch road heats warm area, the tenth heating warm area and the first cooling warm area supply to the second heating warm area of upper furnace body to the 7th.
Above-described nitrogen feed system, the second supply branch road supplies to the first heating warm area of lower furnace body. 3rd supply branch road supplies to the 8th heating warm area and the 9th heating warm area of lower furnace body.
Above-described nitrogen feed system, including three manual modulation valves, first supply branch road connects Nitrogen source gases by the first manual modulation valve, and the second supply branch road connects Nitrogen source gases by the second manual modulation valve, and the 3rd supply branch road connects Nitrogen source gases by the 3rd manual modulation valve.
Including three effusion meters, the outlet of manual modulation valve connects supply branch road by effusion meter.
Above-described nitrogen feed system, Nitrogen source gases includes pressure regulator valve, Pressure gauge, gas source switch valve and flow distribution plate, the output termination gas source switch valve of pressure regulator valve, the output termination flow distribution plate of switch valve, three described supply branch roads connect three outfans of flow distribution plate respectively; Pressure gauge connects pressure regulator valve.
Above-described nitrogen feed system, including control circuit and proportioning valve, control circuit includes controller, mode selection switch, oxygen analyzer and proportional valve controller; The output termination controller of mode selection switch, the outfan of the input termination controller of proportional valve controller, the control end of the output termination proportioning valve of proportional valve controller, proportioning valve and the first manual modulation valve also connect; The input of oxygen analyzer connects the sampled point of reflow soldering, output termination controller.
Above-described nitrogen feed system, connects the outfan of controller respectively including alarm lamp and alarm buzzer, alarm lamp and alarm buzzer.
Above-described nitrogen feed system, the outlet of supply branch road is arranged in the burner hearth outside the air port of warm area bellows convection current air flue.
This utility model according to the demand of welding procedure, adopts three supply branch roads that the different parts of reflow soldering supplies nitrogen respectively, simple in construction, Non-follow control or automatically control all more convenient.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is the structural representation of the nitrogen feed system of this utility model embodiment reflow soldering.
Fig. 2 is the schematic diagram of this utility model embodiment control circuit.
[detailed description of the invention]
The structure of this utility model embodiment reflow soldering nitrogen feed system is as depicted in figs. 1 and 2, including Nitrogen source gases, control circuit, proportioning valve V3, three supply branch roads, three effusion meters and three manual modulation valves, first supply branch road B1 supplies to the anterior of reflow soldering flat-temperature zone, second supply branch road B2 supplies to the front end of reflow soldering heating zone, and the 3rd supply branch road B3 supplies to the remainder of reflow soldering.
Reflow soldering includes upper furnace body W1 and lower furnace body W2, upper furnace body W1 and lower furnace body W2 and respectively includes 10 heating warm areas and two cooling warm areas from front to back, the contiguous first cooling warm area of the tenth heating warm area. Wherein, first to fourth heating warm area is heating zone, and the 5th to the 7th heating warm area is flat-temperature zone; 8th to the tenth heating warm area is weld zone.
First supply branch road B1 supplies to the 8th heating warm area and the 9th heating temperature of upper furnace body W1, second supply branch road B2 supplies to the first heating warm area of upper furnace body W1 and lower furnace body W2,3rd supply branch road B3 is divided into upper furnace body branch road and lower furnace body branch road, and upper furnace body branch road heats warm area, the tenth heating warm area and the first cooling warm area supply to the second heating warm area of upper furnace body W1 to the 7th;Lower furnace body branch road supplies to the 8th heating warm area and the 9th heating temperature of lower furnace body W2.
First supply branch road B1 connects Nitrogen source gases by the first manual modulation valve MV1, and the second supply branch road B2 connects Nitrogen source gases by the second manual modulation valve MV2, and the 3rd supply branch road B3 connects Nitrogen source gases by the 3rd manual modulation valve MV3. Manual modulation valve MV1, MV2 and MV# outlet respectively through effusion meter F1, F2 and F3 connect supply branch road B1, B2 and B3. Each outlet supplying branch road is arranged in the burner hearth outside the air port of warm area bellows convection current air flue.
Nitrogen source gases includes pressure regulator valve V1, digital pressure gauge D1, gas source switch valve V2 and flow distribution plate P1, the output termination gas source switch valve V2 of pressure regulator valve V1, output termination the flow distribution plate P1, three supply branch road B1 of switch valve V2, B2 and B3 entrance connect three outfans of flow distribution plate P1 respectively. Digital pressure gauge D1 meets pressure regulator valve V1.
As in figure 2 it is shown, control circuit includes controller, mode selection switch B6, oxygen analyzer A1, proportional valve controller VEA250, alarm lamp L1 and alarm buzzer B5.
Controller includes the PLC of two communication connections, and the model of a PLC is KV-N14DT, and the model of the 2nd PLC is KV-N3AM.
The input of output termination the oneth PLC, the oxygen analyzer A1 of mode selection switch B6 connects the sampled point of reflow soldering, the input of output termination the 2nd PLC. The outfan of input termination the 2nd PLC of proportional valve controller VEA250, the control end of the output termination proportioning valve V3 of proportioning valve V3 controller, proportioning valve V3 and the first manual modulation valve also connect. Alarm lamp L1 and alarm buzzer B5 connects the outfan of a PLC respectively.
Oneth PLCKV-N24DT is RUN pattern, mode selection switch B6 is MANUAL CONTROL mode when disconnecting with first branch road flow nitrogen charging with 80L, and the terminal output 5V voltage signal of a PLC drives proportioning valve V3 to send out 100% output (0-5V correspondence 0-100% is to control valve opening) to proportional valve controller.
Mode selection switch B6 Guan Bi is for automatic control mode, also it is the configuration switch of PPM value simultaneously, corresponding oxygen divides the value of instrument to set, oxygen divides the voltage signal that instrument converts 4-20mA to current signal input the 2nd PLC, the 2nd PLC after PPM value being processed export 0-5V to proportional valve controller to drive proportional valve control nitrogen flow. When after 100% nitrogen flow is supplied 2 minutes, also PPM value is also less than setting value, alarm lamp L1 and alarm buzzer B5 reports to the police. When PPM value is higher than setting value in situation, pressing B7 quick nitrogen charging button by changes valve opening is 100% be adjusted to maximum output 80L, regularly returns to automatic control state after 2min,
When PPM value arrives setting value, in the way of subtracting 10L by 2 minutes, it is automatically adjusted proportioning valve nitrogen charging (totally 9 aperture 80L, 70L, 60L, 50L, 40L, 30L, 20L, 10L, 0L); PPM value, lower than setting value, also down adjusts a valve opening (dropping 10L output) for two minutes when declining and adjusts proportioning valve. PPM value exports output warning instruction and warning buzzing (PLCOUT500501 is 1) when 80L time delay is also higher than setting value for 2 minutes higher than setting value and for maximum
This utility model embodiment can reduce nitrogen supply (NS) amount in a case where, makes consumption reducing nitrogen:
At the initial stage of production, oxygen concentration has reached the index of below setting value, it is possible to reduce the use of nitrogen supply (NS) amount, thus cutting down nitrogen to make consumption;
When solder reflow device did not have plate to produce, when oxygen concentration reaches below setting value, it is possible to reduce nitrogen supply (NS) amount, make consumption reducing nitrogen;
In Reflow Soldering under the environment produced, oxygen concentration has reached the index of below setting value, then can also reduce nitrogen supply (NS) amount, makes consumption reducing nitrogen.
This utility model above example nitrogen feed system has the advantage that
1. simple in construction, easy to control, it is possible to control nitrogen discharge capacity in subregional, it is possible to arbitrary set nitrogen use level value;
2. nitrogen use level can select hand control manually or automatically, simple to operate;
3. it is effectively controlled the property constantly that nitrogen situation in stove is constant, adds the quality assurance of product, it is possible to reduce product cost.
Claims (9)
1. the nitrogen feed system of a reflow soldering, including Nitrogen source gases and supply branch road, reflow soldering includes upper furnace body and lower furnace body, it is characterized in that, including three described supply branch roads, the anterior supply of the first supply Zhi Luxiang reflow soldering weld zone, the front end supply of the second supply Zhi Luxiang reflow soldering heating zone, the remainder supply of the 3rd supply Zhi Luxiang reflow soldering.
2. nitrogen feed system according to claim 1, it is characterised in that reflow soldering includes 10 heating warm areas and two cooling warm areas, the contiguous first cooling warm area of the tenth heating warm area; First supply branch road supplies to the 8th heating warm area and the 9th heating temperature of upper furnace body, second supply branch road is to the first heating warm area supply of upper furnace body, and the 3rd supply branch road heats warm area, the tenth heating warm area and the first cooling warm area supply to the second heating warm area of upper furnace body to the 7th.
3. nitrogen feed system according to claim 2, it is characterised in that the second supply branch road is to the first heating warm area supply of lower furnace body, and the 3rd supply branch road heats warm area and the 9th heating warm area supply to the 8th of lower furnace body the.
4. nitrogen feed system according to claim 1, it is characterized in that, including three manual modulation valves, first supply branch road connects Nitrogen source gases by the first manual modulation valve, second supply branch road connects Nitrogen source gases by the second manual modulation valve, and the 3rd supply branch road connects Nitrogen source gases by the 3rd manual modulation valve.
5. nitrogen feed system according to claim 4, it is characterised in that including three effusion meters, the outlet of manual modulation valve connects supply branch road by effusion meter.
6. nitrogen feed system according to claim 1, it is characterized in that, Nitrogen source gases includes pressure regulator valve, Pressure gauge, gas source switch valve and flow distribution plate, the output termination gas source switch valve of pressure regulator valve, the output termination flow distribution plate of switch valve, three described supply branch roads connect three outfans of flow distribution plate respectively; Pressure gauge connects pressure regulator valve.
7. nitrogen feed system according to claim 4, it is characterised in that including control circuit and proportioning valve, control circuit includes controller, mode selection switch, oxygen analyzer and proportional valve controller; The output termination controller of mode selection switch, the outfan of the input termination controller of proportional valve controller, the control end of the output termination proportioning valve of proportional valve controller, proportioning valve and the first manual modulation valve also connect; The input of oxygen analyzer connects the sampled point of reflow soldering, output termination controller.
8. nitrogen feed system according to claim 1, it is characterised in that include alarm lamp and alarm buzzer, alarm lamp and alarm buzzer and connect the outfan of controller respectively.
9. nitrogen feed system according to claim 2, it is characterised in that the outlet of supply branch road is arranged in the burner hearth outside the air port of warm area bellows convection current air flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620023922.9U CN205309503U (en) | 2016-01-12 | 2016-01-12 | Reflow furnace's nitrogen gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620023922.9U CN205309503U (en) | 2016-01-12 | 2016-01-12 | Reflow furnace's nitrogen gas supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205309503U true CN205309503U (en) | 2016-06-15 |
Family
ID=56204161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620023922.9U Expired - Fee Related CN205309503U (en) | 2016-01-12 | 2016-01-12 | Reflow furnace's nitrogen gas supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205309503U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970187A (en) * | 2017-06-01 | 2017-07-21 | 上海昶艾电子科技有限公司 | The oxygen concentration detecting system and control method of wave-soldering/reflow soldering |
| CN107329502A (en) * | 2017-08-30 | 2017-11-07 | 伟创力电子技术(苏州)有限公司 | One kind automatically controls nitrogen flow system |
| CN110874106A (en) * | 2018-08-31 | 2020-03-10 | 伊利诺斯工具制品有限公司 | Gas control system and method for reflow oven |
| CN114484277A (en) * | 2022-01-07 | 2022-05-13 | 伟创力电子技术(苏州)有限公司 | Nitrogen saving system based on BTU reflow furnace and control method thereof |
| WO2022251052A1 (en) * | 2021-05-24 | 2022-12-01 | Illinois Tool Works Inc. | Gas control system for reflow furnace and reflow furnace |
-
2016
- 2016-01-12 CN CN201620023922.9U patent/CN205309503U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970187A (en) * | 2017-06-01 | 2017-07-21 | 上海昶艾电子科技有限公司 | The oxygen concentration detecting system and control method of wave-soldering/reflow soldering |
| CN107329502A (en) * | 2017-08-30 | 2017-11-07 | 伟创力电子技术(苏州)有限公司 | One kind automatically controls nitrogen flow system |
| CN110874106A (en) * | 2018-08-31 | 2020-03-10 | 伊利诺斯工具制品有限公司 | Gas control system and method for reflow oven |
| WO2022251052A1 (en) * | 2021-05-24 | 2022-12-01 | Illinois Tool Works Inc. | Gas control system for reflow furnace and reflow furnace |
| CN114484277A (en) * | 2022-01-07 | 2022-05-13 | 伟创力电子技术(苏州)有限公司 | Nitrogen saving system based on BTU reflow furnace and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205309503U (en) | Reflow furnace's nitrogen gas supply system | |
| CN105546572B (en) | A kind of vertical annealing furnace burning zone automatic temperature control system and its method | |
| TWI793351B (en) | Gas control system and method for a reflow oven | |
| CN101364115B (en) | Nitrogen closed-loop control method and system | |
| CN111875236B (en) | Optical glass kiln total oxygen combustion control system and control method thereof | |
| CN206958963U (en) | A kind of kiln burning control system | |
| CN105130166B (en) | The pure oxygen burning system accurately controlled for rock wool melt temperature multiple spot | |
| CN205309492U (en) | Reflow furnace | |
| CN204440196U (en) | A kind of beer fermentation process temperature control equipment | |
| FI60308C (en) | OVERHAULIG BLANDNINGS- OCH EFFEKTREGLERING VID FLERBRAENNARSKAKTUGNAR FOER SMAELTNING AV METALLER | |
| CN103307627B (en) | Temperature control device of flue gas desulfurizing and acid-making hot blast stove and control method | |
| CN111167326A (en) | Gas distribution instrument and gas distribution method | |
| CN103225820B (en) | Chain grate furnace combustion optimization control system | |
| CN106980329A (en) | A kind of glass furnace for pure oxygen combustion oxygen flow automatic control system | |
| CN107099651A (en) | A kind of method and system of perhydro protection gas roller bottom stove hydrogen flowing quantity control | |
| CN104874780A (en) | Automatic optimization baking device for torpedo type hot metal ladle | |
| CN207688168U (en) | Kiln air-fuel ratio regulation system | |
| CN208853902U (en) | A kind of gas control system for reflow soldering | |
| CN105043101A (en) | Automatic temperature control method and system of fluidized bed combustion boiler | |
| CN206055208U (en) | A kind of gas pressure self-checking device | |
| CN205152286U (en) | Heat treatment furnace coal gas radiant tube of ability automatic balance coal gas flow | |
| CN205065790U (en) | Melt aluminium stove burning control system | |
| CN208332263U (en) | A kind of heated by natural gas burner based on PLC control | |
| CN214558111U (en) | Intelligent and digital control device for thermal cutting of flame gas | |
| CN116282843A (en) | Gas control system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20200112 |